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Direct-current withstand voltage test device and method used for ultra-high-voltage converter transformer

A converter transformer and ultra-high voltage technology, applied in the field of DC withstand voltage test devices

Pending Publication Date: 2020-02-11
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, to carry out the DC withstand voltage test device on site, the site environment and test requirements must be considered, which involves the development of the DC withstand voltage test device for the converter transformer.

Method used

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  • Direct-current withstand voltage test device and method used for ultra-high-voltage converter transformer
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  • Direct-current withstand voltage test device and method used for ultra-high-voltage converter transformer

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Embodiment Construction

[0035] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0036] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a direct-current withstand voltage test device and method used for an ultra-high-voltage converter transformer, and belongs to the technical field of electrical equipment and electrical engineering. The device of the invention includes a variable frequency source without local discharging, an intermediate transformer, a voltage doubler rectifier, a voltage divider, a controller and a current limiting resistor. The controller generates a test voltage regulation command according to voltage data, and transmits the same to the current limiting resistor. The current limiting resistor adjusts test voltage according to the test voltage regulation command, and outputs the regulated test voltage to the target ultra-high-voltage converter transformer to carry out a direct-current withstand voltage test on the target ultra-high-voltage converter transformer. The device can realize test assessment of all voltage levels including levels of + / -1100kV converter transformers.

Description

technical field [0001] The invention relates to the technical fields of electrical equipment and electrical engineering, and more specifically, relates to a DC withstand voltage test device and method for UHV converter transformers. Background technique [0002] With the development of power grid technology, UHV DC transmission technology is developing rapidly. The improvement of voltage level and the continuous improvement of transmission capacity have put forward higher requirements for converter capacity, which has led to the increase in the transportation weight and volume of UHV converter transformers. Increase, exceeding the transportation limit, resulting in the impossibility of conventional single rheology road or rail transportation. [0003] In order to solve this problem, the on-site assembly technology of UHV converter transformers is proposed, that is, after the production test in the manufacturing plant is completed, the converter transformer is disassembled in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/14
CPCG01R31/1227G01R31/14
Inventor 赵志刚张书琦程涣超徐征宇刘雪丽王健一汤浩遇心如吴超赵晓林孙建涛汪可赵晓宇王琳梁宁川吕晓露杨帆
Owner CHINA ELECTRIC POWER RES INST
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